Haplotype-based phylogenetic analysis and population genomics uncover the origin and domestication of sweetpotato  

作　　者：Mengxiao Yan Ming Li Yunze Wang Xinyi Wang M-Hossein Moeinzadeh Dora G.Quispe-Huamanquispe Weijuan Fan Yijie Fang Yuqin Wang Haozhen Nie Zhangying Wang Aiko Tanaka Bettina Heider Jan F.Kreuze Godelieve Gheysen Hongxia Wang Martin Vingron Ralph Bock Jun Yang 

机构地区：[1]Shanghai Key Laboratory of Plant Functional Genomics and Resources,Shanghai Chenshan Botanical Garden,Shanghai 201602,China [2]College of Life Sciences,Chongqing Normal University,Chongqing 401331,China [3]Biotechnology and Nuclear Technology Research Institute,Sichuan Academy of Agricultural Sciences,Chengdu 610061,China [4]College of Life Sciences,Shanghai Normal University,Shanghai 200234,China [5]Department of Computational Molecular Biology,Max Planck Institute for Molecular Genetics,IhnestraBe 63-73,14195 Berlin,Germany [6]Department of Biotechnology,Ghent University,9000 Ghent,Belgium [7]Guangdong Provincial Key Laboratory of Crops Genetics and Improvement,Crop Research Institute,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China [8]Graduate School of Bioagricultural Sciences,Nagoya University,Chikusa,Nagoya 464-8601,Japan [9]international Potato Center(CIP),Lima,Peru [10]CAS Center for Excellence of Molecular Plant Sciences,Institute of Plant Physiology and Ecology,Chinese Academy of Sciences,Shanghai 200233,China [11]Max-Planck-Institut fur Molekulare Pflanzenphysiologie,Am Muhlenberg 1,14476 Potsdam-Golm,Germany

出　　处：《Molecular Plant》2024年第2期277-296,共20页分子植物（英文版）

基　　金：This work was funded by the Ministry of Science and Technology of the People's Republic of China(2019YFD1000703 to J.Y.,2019YFD1000704-2 to M.Y.,and 2019YFD1000701-2 to W.F.);the National Natural Science Foundation of China(32300207 to M.Y.,32272228 to M.L.,and 31771854 to H.W.);the"1+9"Open Competition Project of the Sichuan Academy of Agricultural Sciences to select the best candidates(sweetpotato part of 1+9KJGG001 to M.L.);the Chongqing Normal University Foundation(23XLB033 to M.L.);the Shanghai Municipal Afforestation&City Appearance and Environmental Sanitation Administration(G222413 to M.Y.,G222411 to H.W.,G232405 to H.N.,and G242407 to W.F.);the Science and Technology Commission of Shanghai Municipality(22JC1401300 to H.W.);the Youth Innovation Promotion Association CAS(to J.Y.);the Bureau of Science and Technology for Development CAS(KFJ-BRP-017-42 to J.Y.).

摘　　要：The hexaploid sweetpotato(lpomoea batatas)is one of the most important root crops worldwide.However,its genetic origin remains controversial,and its domestication history remains unknown.In this study,we used a range of genetic evidence and a newly developed haplotype-based phylogenetic analysis to identify two probable progenitors of sweetpotato.The diploid progenitor was likely closely related to lpomoea ae-quatoriensis and contributed the B,subgenome,IbT-DNA2,and the lineage 1 type of chloroplast genome to sweetpotato.The tetraploid progenitor of sweetpotato was most likely l.batatas 4x,which donated the B2 subgenome,IbT-DNA1,and the lineage 2 type of chloroplast genome.Sweetpotato most likely originated from reciprocal crosses between the diploid and tetraploid progenitors,followed by a subsequent whole-genome duplication.In addition,we detected biased gene exchanges between the subgenomes;the rate of B,to B2 subgenome conversions was nearly three times higher than that of B2 to B subgenome conver-sions.Our analyses revealed that genes involved in storage root formation,maintenance of genome stabil-ity,biotic resistance,sugar transport,and potassium uptake were selected during the speciation and domestication of sweetpotato.This study sheds light on the evolution of sweetpotato and paves the way forimprovementofthiscrop.

关 键 词：SWEETPOTATO ORIGIN gene conversion DOMESTICATION IbT-DNA HPA 

分 类 号：S531[农业科学—作物学]